Siemens CQD2100 - 100 A, 480 V, 2-Pole Circuit Breaker | AmpState

Meet the Siemens CQD2100 — a 100 A, 480 V, 2-pole molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its compact design makes efficient use of precious panel space while keeping installation straightforward and reliable.

Why the CQD2100 stands out

• Space-efficient molded-case design: Minimal footprint without sacrificing protection, ideal for tighter panel layouts and retrofit projects.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection performance by automatically adjusting to current conditions and quickly responding to short-circuit events.
• OEM-compatible installation: Designed to be paired with matching Siemens OEM loadcenters and panelboards, simplifying replacement and upgrades and reducing compatibility concerns.
• Versatile across settings: Suitable for residential, commercial, and light industrial applications where reliable protection is essential.
• Clear specifications for confident selection: 2-pole configuration, 100A amperage rating, and 480V voltage rating provide precise protection for demanding electrical environments.

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: CQD2100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100A
• Voltage rating: 480V
• Number of poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical benefits

The CQD2100 is well-suited for panel replacement projects where a reliable, space-saving solution is needed. Use it to:

• Protect branch circuits in residential service panels, commercial distribution panels, and light industrial panels
• Upgrade or retrofit existing panelboards with a compatible, dependable Siemens breaker
• Provide robust protection for circuits that require clear, fast interruption during overloads or faults

Installation and compatibility considerations

For best results, pair the CQD2100 with Siemens OEM loadcenters and panelboards that specify compatibility with this 2-pole molded case breaker. Ensure the application’s voltage and amperage requirements align with the 480V, 100A, 2-pole configuration. Follow standard electrical codes and the panel’s installation guidelines to secure accurate torque and proper seating for reliable operation over time.

What you gain with the CQD2100

• Reliable protection with a proven thermal-magnetic mechanism, helping prevent damage from both overloads and short circuits.
• Efficient panel space utilization, enabling tighter, cleaner electrical layouts.
• A straightforward path for installation and future service thanks to OEM-compatible design.
• Confidence across multiple applications—from homes to light commercial environments—thanks to its solid, industry-standard performance.